Jenna's Cell Theory Timeline

  • Zacharias Jansen

    Zacharias Jansen

    Produced first compound microscope by combining two complex lenses with a tube. Allowed people to observe cells.
  • Jan Baptist van Helmont

    Jan Baptist van Helmont

    Belived in spontanegous generation. Believed if you put a rag over a pot of rice for 21 days you would create mice.
  • Robert Hooke

    Robert Hooke

    He discovered and named cells.
  • Robert Brown

    Robert Brown

    Discovered the nucleus in plant cells.
  • Anton van Leeuwenhoek

    Anton van Leeuwenhoek

    First to observe and describe single celled organisms referred to as " animalcules".
  • Aristole

    Aristole

    Aristotle observed preformation and epigenisis when theorizing how animals and plants developed. Preformation is the theory that a sperm or other cell is a miniature version of the animal and will grow when properly stimulated. Epigenisis is the theory that animals develope from similar parts or other animals.
  • Lorenzzaro Spallanzi

    Lorenzzaro Spallanzi

    Created new classifications for animals based on their evolutionary path. Shows similarities between organisms cells fundamental unit of life.
  • Matthias Schleiden

    Matthias Schleiden

    He discovered that all plants are made of cells.
  • Theodor Schwann

    Theodor Schwann

    He discovered all animals are made of cells.
  • Albrecht von Roelliker

    Albrecht von Roelliker

    He claimed research on the nervous system. Connection between nerve fibers and cell bodies are all attached.
  • Rudolph Virchow

    Rudolph Virchow

    Discovered new cells could be produced only by division of existing cells. Also that living things can only come from other living things. Nonliving things cant make living things
  • Louis  Pasteur

    Louis Pasteur

    Ended debate with swan-neck flask experiment and is the reason that Paturization was made and is still used today.